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Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2024
Benefit Plans [Abstract]  
Net Periodic Benefit
The table below outlines the components of the Company’s net periodic benefit recognized during the three and nine months ended September 30, 2024 and 2023 for its pension and other postretirement benefit plans:

 
Three months ended September 30,
  
 
Pension Benefits
    
Other Postretirement Benefits
  
(dollars in thousands)
  
2024
    
2023
    
2024
    
2023
  

                       
Service cost
  
$
-
    
$
-
    
$
5
    
$
2
  
Interest cost
    
289
      
304
      
72
      
65
  
Expected return on plan assets
    
(762
)
    
(672
)
    
(332
)
    
(288
)
Amortization of net actuarial gain
    
(19
)
    
-
      
(184
)
    
(115
)
Amortization of prior service cost
    
-
      
-
      
4
      
4
  
Net periodic benefit
  
$
(492
)
  
$
(368
)
  
$
(435
)
  
$
(332
)


 
Nine months ended September 30,
  

 
Pension Benefits
    
Other Postretirement Benefits
  
(dollars in thousands)
  
2024
    
2023
    
2024
    
2023
  

                       
Service cost
  
$
-
    
$
-
    
$
14
    
$
7
  
Interest cost
    
867
      
910
      
216
      
197
  
Expected return on plan assets
    
(2,286
)
    
(2,013
)
    
(995
)
    
(867
)
Amortization of net actuarial gain
    
(57
)
    
-
      
(551
)
    
(343
)
Amortization of prior service cost
    
-
      
-
      
10
      
10
  
Net periodic benefit
  
$
(1,476
)
  
$
(1,103
)
  
$
(1,306
)
  
$
(996
)